Updated gemfile to rails4
Remove whiny_nils, add eager_load.

whiny_nils is no longer needed in rails running on 1.9.3, as nil now throws method errors.
Run rake rails:update:bin to generate new binfiles for rails
Merge branch 'dev' into rails4

Conflicts:
	.gitignore
	Gemfile
	Gemfile.lock
Votable to strong_parameters
Update db schema because Rails 4 makes the syntax awesomer (syntax changes only)
Merge branch 'master' into rails4

Conflicts:
	Gemfile.lock
	app/models/concerns/comment.rb
	app/models/concerns/votable.rb
	app/models/solution.rb
	config/environments/production.rb
	db/schema.rb
Merge branch 'dev' into rails4

Conflicts:
	Gemfile.lock
Update Gemfile.lock
Update dependencies
updated db schema
fixed the solution edit test
Put db:reset into travis script
Merge branch 'rails4' of https://github.com/codeflash/codeflash into rails4
Remove rename_index references in migrations, as rails4 does this automagically
Merge branch 'dev' into rails4
Merge pull request #152 from codeflash/rails4

Rails4